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Old 09-23-2010, 04:42 PM   #1 (permalink)
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Default Having the hardest time understanding aligning of fields?

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I am having some challenges aligning fields. I have tried using custom layout managers and just am not having a consistent layout where fields are aligned properly. I have written the following layout manager and even though it aligns items in left column properly, it fails on right column.




 *  <your company here>, <year>

 * Confidential and proprietary.


package com.wastemanagement.containerpickup;

import net.rim.device.api.ui.Manager;

import net.rim.device.api.ui.Field;




public class GridFieldManager extends Manager {

    private int numColumns;


    public GridFieldManager(int numColumns, long style) {   


    this.numColumns = numColumns;




    protected void sublayout(int width, int height){

        int [] columnWidths = new int[numColumns];

        int availableWidth = width;

        int availableHeight = height;


        //for each column size allthe fields and get the maximum width

        for(int column = 0; column<numColumns; column++){


            for(int fieldIndex = column; fieldIndex < getFieldCount(); fieldIndex+=numColumns){


                Field field = getField(fieldIndex);

                layoutChild(field, availableWidth, availableHeight);


                    columnWidths[column] = field.getWidth();





            availableWidth -= columnWidths[column];




        int currentRow = 0;

        int currentRowHeight = 0;

        int rowYOffset = 0;



        //set the position of each field


        for(int fieldIndex = 0; fieldIndex < getFieldCount(); fieldIndex++)


         Field field = getField(fieldIndex);



         int fieldOffset = 0;


         if ((field.getStyle() & Field.FIELD_RIGHT) ==Field.FIELD_RIGHT){

             fieldOffset = columnWidths[fieldIndex % numColumns] - field.getWidth();


            if (fieldIndex % numColumns ==0){

             setPositionChild(field,0 + fieldOffset,rowYOffset);  





             setPositionChild(field,columnWidths[(fieldIndex % numColumns)-1]+fieldOffset,rowYOffset);  




            if (field.getHeight()> currentRowHeight){


                currentRowHeight = field.getHeight();




            if (fieldIndex % numColumns == numColumns -1)


                currentRow ++;


                currentRowHeight = 0;










        int totalWidth = 0;

        for (int i = 0; i < numColumns;i++){


            totalWidth += columnWidths[i];



        setExtent(totalWidth, rowYOffset + currentRowHeight);







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